Tool-holder.



I. M. WOOD.

TOOL HOLDER.

APPLICATION FILED SEPT. 25, 1911.

I Patented June 4, 1912.

wi/immeo Q QBMWW am 4, OEM'ZW HEB STATES PATNT ornio.

JOHN M. WOOD, OF DETROIT, MICHIGAN.

Specification of Letters Patent.

' i TOOL-HOLDER.

To all whom it may concern:

Be it known that 1, JOHN M. 7001 a citizen of the United States ofAmerica, residing at Detroit, in the county of Wayne and State ofMichigan, new and useful Improvements in Tool- Holders, of which the.following is a specification, reference being had therein to theaccompanying drawings.

This invention relates to a tool holder of the class in which a toolholding head or body is provided with a shank for securing the holder ina machine and in which means are provided for adjusting the toolaccurately into and out of longitudinal alinement with the shank.

The object of this invention is to provide a simple construct-ion havingefiicient means for quickly securing the tool in place, and means foraccurately adjusting the tool, said securing and adjusting means beingcontained within the head or body of the holder and thus provide aconstruction taking up the minimum of space in length.

To this end the invention consists in the matters hereinafter set forthand more particularly pointed out in the claims reference being had tothe accompanying drawing in which- Fi ure 1 is a side elevation of adevice embody ing the invention; Fig. 2, a longitudinal verticalsectionthrough the same; Fig.

3, a front end elevation with portions broken away to show theconstruction; andFig. 4 a transverse section on the line 4-4 of Fig. 3.

As shown in thedrawingsl represents a suitable head or body having anintegral shank 2 extending laterally therefrom and by means of whichshank the holder is secured in place within a boring or other machinefor use. The head is formed with a smooth longitudinal bore 8 extendingtherethrough from end to end and with a longitudinal slot 4 in its sideopposite to that of the shank and a smaller slot 5 in one of its othersides.

Fitting within the bore 3 of the head is a cylindrical plug 6 having atransverse opening 7 to receive a suitable tool 8 which when in placewithin the plug extends outward through the slot 4 in the head. Within alongitudinal slot 9 in the plug which opens at its lower end into theopening 7 is a movable block or jaw 10 having its lower end formed toengage the'tool and hold the have invented certain same firmly seatedwithin the opening 7, the length of the jaw and the tool seat, being ofsufficient length to prevent any lateral movement of the tool and theirheavy strains.

Formed integral with the block 6 and extendingupward therefrom in theaxis of the bore 3, is a tubular extension or member 11 which isexternally screwthreaded throughout its length and is internallyscrewthreaded toreceive a clamping screw 12 extending inward from theouterend of the tube and bearing at its inner end upon the top ofthe jaw10. The screw may be turned inward-to force the jaw into clampingcontact with the tool 8, by means of a head 13 on its outer end and asmall guide pin 14 on its inner end engages an opening in the jaw 10 toguidethe jaw and prevent the same from falling out when the tool isremoved.

An adjusting nut 15 has an inwardly extending portion 16 fitting withinthe upper end of the bore 3 of the head and this portion is formed withan annular groove 17 to receive a locking pin 18-which extendstransversely through the head 1 and engages the groove to detachablyhold the nut in place and permit the same to turn freely within the boreof the head. The nut is internally screwthreadedto engage the ex ternalscrew threads of the tubular extension 11 on the block 6 and the nut isformed with a shoulder 19 to engage the end of the head and ispreferably knurled so that it may be conveniently turned by theoperator. Suitably numbered graduations 20 are provided 0n the nut toindicate the position of the screw 11 relative to the-head and asuitable zero mark 21 on the upper end of the head is provided toregister with'the graduations of the nut. l

The tool8 may be quickly and firmly secured in place by inserting it inthe opening or seat 7 therefor in the block 6 and then turning theclamping screw 12 to force the jaw 10 into engagement with the tool. Themeans for securing the tool to the head are those located entirelywithin the head and in operation the holder may be used with its headrunning close to the work as there are no projections extendingforwardly from the tool side of the head to prevent the holder frombeing run up to the work. By turning the nut 15 the block 6 with itstool may be quickly adjusted longitudinally of Patented June 4,1012.Application filed September 25, 1911. Serial No. 651,033.

the head 1 of the holder,

the bore 3 of the head to bring the tool nearer to or farther from thelongitudinal axis of the shank 2. When so adjusted the outer side faceof the head 1 of the outerv holder and extending inward through the slot5 into engagement with a screwthreaded opening in the block. By means ofa wrench the set screw 22 'may be quickly set up against the head tofirmly clamp the block and rigidly hold the same against movement in thebore of the head. A very quick and accurate adjustment of the tool isthus secured by turning the nut 15 and'should it be found desirable toremove the parts from it is only necessary to knock out the pin 18 whenthe block with its clamping jaw, set screw and tubular extension,together with the adjusting nut may be pulled otherwise out of the head.

Having thus fully described my invention what I claim is 2- 1. In a toolholder, the combination of a head having a longitudinal bore and a slotin one side, a shank on the head, a block slidable within the bore andprovided with a transverse opening opposite the slot in the head toreceive a tool, means for securing the tool in the block, an externallyscrewthreaded extension on the block extending outward through the bore,and a nut on the extension engaging the end of the head and detach ablysecured'thereto to turn thereon.

2. In a tool holder, the combination of a head having a longitudinalbore and a slot in one side, a shank on the head, a block slidablewithin the bore and having a transverse opening opposite the slot in thehead to receive a tool, a tubular extension on the.

block projecting outward through one end of the head, means on theextension engaging the end of the head to adjust said block andextension longitudinally of the bore,

and means extending into the tubular ex tension from its outer end fortool in the block. I

3. In a tool holder the combination of a head having a longitudinal boreand a slot in one side of the head, a block slidable within the bore andhaving a transverse opening opposite the slot in the head to receive atool, an externally and internally screwthreaded tubular extension onthe block extending outward through one end of the head, a nut on theextension detachably secured to the end of the head to turn freelythereon and adjust the block and exsecuring the tension within the bore,a clamping screw extending into the outer end of the tubular extensionand through the same in engagement with the internal screw threads, andmeans within the block adapted to be moved by the screw for securing thetool in the block.

4; In a tool holder, the combination of a head having a smoothlongitudinal bore extending therethrough and longitudinal slots in itssides, a block slidable within the bore and having a transverse openingand slot extending laterally from the'opening, a jaw within the slot inthe block to engage and hold a tool in the opening in said block, atubular extension on the block projecting outward therefrom through theend of the block, means on the extension for adjusting the blocklongitudinally in the bore, means extending through the tubularextension into engagement with the jaw for moving the jaw into clampingengagement with a tool, and a set screw extending through one of theslots in the head into engagement with the block for holding said blockin its adjusted position within the head.

5. In a tool holder, the combination of a head having a longitudinalbore extending therethrough and a slot in one side, a block slidablewithin the 'bore and having an opening, a slot extending laterally fromthe opening opposite the slot in the head to receive a tool, a jaw inthe slot in the block movable therein to engage and clamp a tool, atubular extension on the block extending in the axis of the bore outwardthrough the end of the head, a nut having a shoulder engaging the end ofthe head and provided with an extension fitting within the end of thebore and formed with an annular groove, said nut having screwthreadedengagement with the extension on the head to adjust said headlongitudinally within the bore, a pin extending transversely of the headin engagement with the annular groove in the nut to detachably hold thenut in place and permit a free rotation thereof upon the head, and aclamping screw extending into the tubular extension through its outerend and having screwthreaded engagement therewith, said screw beingadapted to engage said jaw at its inner end to move the jaw and clampthe tool within the block.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN Ml WOOD. Witnesses:

LEWIS E. FLANDERS, OTTO F. BARTHEL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I), 0.

